1 /*****************************************************************************/
3 * moxa.c -- MOXA Intellio family multiport serial driver.
5 * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com.tw).
7 * This code is loosely based on the Linux serial driver, written by
8 * Linus Torvalds, Theodore T'so and others.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
17 * MOXA Intellio Series Driver
23 #include <linux/module.h>
24 #include <linux/types.h>
26 #include <linux/ioport.h>
27 #include <linux/errno.h>
28 #include <linux/signal.h>
29 #include <linux/sched.h>
30 #include <linux/timer.h>
31 #include <linux/interrupt.h>
32 #include <linux/tty.h>
33 #include <linux/tty_flip.h>
34 #include <linux/major.h>
35 #include <linux/string.h>
36 #include <linux/fcntl.h>
37 #include <linux/ptrace.h>
38 #include <linux/serial.h>
39 #include <linux/tty_driver.h>
40 #include <linux/delay.h>
41 #include <linux/pci.h>
42 #include <linux/init.h>
43 #include <linux/bitops.h>
44 #include <linux/completion.h>
46 #include <asm/system.h>
48 #include <asm/uaccess.h>
50 #define MOXA_VERSION "5.1k"
53 #define MOXACUMAJOR 173
55 #define MAX_BOARDS 4 /* Don't change this value */
56 #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */
57 #define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD)
60 * Define the Moxa PCI vendor and device IDs.
62 #define MOXA_BUS_TYPE_ISA 0
63 #define MOXA_BUS_TYPE_PCI 1
66 MOXA_BOARD_C218_PCI = 1,
73 static char *moxa_brdname[] =
75 "C218 Turbo PCI series",
76 "C218 Turbo ISA series",
77 "C320 Turbo PCI series",
78 "C320 Turbo ISA series",
83 static struct pci_device_id moxa_pcibrds[] = {
84 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218),
85 .driver_data = MOXA_BOARD_C218_PCI },
86 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320),
87 .driver_data = MOXA_BOARD_C320_PCI },
88 { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J),
89 .driver_data = MOXA_BOARD_CP204J },
92 MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
93 #endif /* CONFIG_PCI */
95 struct moxa_isa_board_conf {
98 unsigned long baseAddr;
101 static struct moxa_isa_board_conf moxa_isa_boards[] =
103 /* {MOXA_BOARD_C218_ISA,8,0xDC000}, */
106 static struct moxa_board_conf {
109 unsigned long baseAddr;
114 void __iomem *basemem;
115 void __iomem *intNdx;
116 void __iomem *intPend;
117 void __iomem *intTable;
118 } moxa_boards[MAX_BOARDS];
120 struct mxser_mstatus {
137 unsigned short closing_wait;
140 long event; /* long req'd for set_bit --RR */
142 unsigned long statusflags;
143 struct tty_struct *tty;
145 wait_queue_head_t open_wait;
146 struct completion close_wait;
148 struct timer_list emptyTimer;
152 void __iomem *tableAddr;
161 #define TXSTOPPED 0x1
163 #define EMPTYWAIT 0x4
166 #define SERIAL_DO_RESTART
168 #define WAKEUP_CHARS 256
170 static int ttymajor = MOXAMAJOR;
171 /* Variables for insmod */
173 static int baseaddr[4];
175 static int numports[4];
178 MODULE_AUTHOR("William Chen");
179 MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
180 MODULE_LICENSE("GPL");
182 module_param_array(type, int, NULL, 0);
183 module_param_array(baseaddr, int, NULL, 0);
184 module_param_array(numports, int, NULL, 0);
186 module_param(ttymajor, int, 0);
191 static int moxa_open(struct tty_struct *, struct file *);
192 static void moxa_close(struct tty_struct *, struct file *);
193 static int moxa_write(struct tty_struct *, const unsigned char *, int);
194 static int moxa_write_room(struct tty_struct *);
195 static void moxa_flush_buffer(struct tty_struct *);
196 static int moxa_chars_in_buffer(struct tty_struct *);
197 static void moxa_flush_chars(struct tty_struct *);
198 static void moxa_put_char(struct tty_struct *, unsigned char);
199 static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
200 static void moxa_throttle(struct tty_struct *);
201 static void moxa_unthrottle(struct tty_struct *);
202 static void moxa_set_termios(struct tty_struct *, struct ktermios *);
203 static void moxa_stop(struct tty_struct *);
204 static void moxa_start(struct tty_struct *);
205 static void moxa_hangup(struct tty_struct *);
206 static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
207 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
208 unsigned int set, unsigned int clear);
209 static void moxa_poll(unsigned long);
210 static void moxa_set_tty_param(struct tty_struct *, struct ktermios *);
211 static int moxa_block_till_ready(struct tty_struct *, struct file *,
213 static void moxa_setup_empty_event(struct tty_struct *);
214 static void moxa_check_xmit_empty(unsigned long);
215 static void moxa_shut_down(struct moxa_port *);
216 static void moxa_receive_data(struct moxa_port *);
218 * moxa board interface functions:
220 static void MoxaDriverInit(void);
221 static int MoxaDriverIoctl(unsigned int, unsigned long, int);
222 static int MoxaDriverPoll(void);
223 static int MoxaPortsOfCard(int);
224 static int MoxaPortIsValid(int);
225 static void MoxaPortEnable(int);
226 static void MoxaPortDisable(int);
227 static long MoxaPortGetMaxBaud(int);
228 static long MoxaPortSetBaud(int, long);
229 static int MoxaPortSetTermio(int, struct ktermios *, speed_t);
230 static int MoxaPortGetLineOut(int, int *, int *);
231 static void MoxaPortLineCtrl(int, int, int);
232 static void MoxaPortFlowCtrl(int, int, int, int, int, int);
233 static int MoxaPortLineStatus(int);
234 static int MoxaPortDCDChange(int);
235 static int MoxaPortDCDON(int);
236 static void MoxaPortFlushData(int, int);
237 static int MoxaPortWriteData(int, unsigned char *, int);
238 static int MoxaPortReadData(int, struct tty_struct *tty);
239 static int MoxaPortTxQueue(int);
240 static int MoxaPortRxQueue(int);
241 static int MoxaPortTxFree(int);
242 static void MoxaPortTxDisable(int);
243 static void MoxaPortTxEnable(int);
244 static int MoxaPortResetBrkCnt(int);
245 static void MoxaPortSendBreak(int, int);
246 static int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *);
247 static int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *);
248 static void MoxaSetFifo(int port, int enable);
250 static const struct tty_operations moxa_ops = {
254 .write_room = moxa_write_room,
255 .flush_buffer = moxa_flush_buffer,
256 .chars_in_buffer = moxa_chars_in_buffer,
257 .flush_chars = moxa_flush_chars,
258 .put_char = moxa_put_char,
260 .throttle = moxa_throttle,
261 .unthrottle = moxa_unthrottle,
262 .set_termios = moxa_set_termios,
265 .hangup = moxa_hangup,
266 .tiocmget = moxa_tiocmget,
267 .tiocmset = moxa_tiocmset,
270 static struct tty_driver *moxaDriver;
271 static struct moxa_port moxa_ports[MAX_PORTS];
272 static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0);
273 static DEFINE_SPINLOCK(moxa_lock);
276 static int __devinit moxa_pci_probe(struct pci_dev *pdev,
277 const struct pci_device_id *ent)
279 struct moxa_board_conf *board;
281 int board_type = ent->driver_data;
284 retval = pci_enable_device(pdev);
286 dev_err(&pdev->dev, "can't enable pci device\n");
290 for (i = 0; i < MAX_BOARDS; i++)
291 if (moxa_boards[i].basemem == NULL)
295 if (i >= MAX_BOARDS) {
296 dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards "
297 "found. Board is ignored.\n", MAX_BOARDS);
301 board = &moxa_boards[i];
302 board->basemem = pci_iomap(pdev, 2, 0x4000);
303 if (board->basemem == NULL) {
304 dev_err(&pdev->dev, "can't remap io space 2\n");
308 board->boardType = board_type;
309 switch (board_type) {
310 case MOXA_BOARD_C218_ISA:
311 case MOXA_BOARD_C218_PCI:
315 case MOXA_BOARD_CP204J:
322 board->busType = MOXA_BUS_TYPE_PCI;
324 pci_set_drvdata(pdev, board);
331 static void __devexit moxa_pci_remove(struct pci_dev *pdev)
333 struct moxa_board_conf *brd = pci_get_drvdata(pdev);
335 pci_iounmap(pdev, brd->basemem);
339 static struct pci_driver moxa_pci_driver = {
341 .id_table = moxa_pcibrds,
342 .probe = moxa_pci_probe,
343 .remove = __devexit_p(moxa_pci_remove)
345 #endif /* CONFIG_PCI */
347 static int __init moxa_init(void)
349 int i, numBoards, retval = 0;
350 struct moxa_port *ch;
352 printk(KERN_INFO "MOXA Intellio family driver version %s\n",
354 moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
358 moxaDriver->owner = THIS_MODULE;
359 moxaDriver->name = "ttyMX";
360 moxaDriver->major = ttymajor;
361 moxaDriver->minor_start = 0;
362 moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
363 moxaDriver->subtype = SERIAL_TYPE_NORMAL;
364 moxaDriver->init_termios = tty_std_termios;
365 moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
366 moxaDriver->init_termios.c_ispeed = 9600;
367 moxaDriver->init_termios.c_ospeed = 9600;
368 moxaDriver->flags = TTY_DRIVER_REAL_RAW;
369 tty_set_operations(moxaDriver, &moxa_ops);
371 for (i = 0, ch = moxa_ports; i < MAX_PORTS; i++, ch++) {
372 ch->type = PORT_16550A;
374 ch->close_delay = 5 * HZ / 10;
375 ch->closing_wait = 30 * HZ;
376 ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
377 init_waitqueue_head(&ch->open_wait);
378 init_completion(&ch->close_wait);
380 setup_timer(&ch->emptyTimer, moxa_check_xmit_empty,
384 pr_debug("Moxa tty devices major number = %d\n", ttymajor);
386 if (tty_register_driver(moxaDriver)) {
387 printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
388 put_tty_driver(moxaDriver);
392 mod_timer(&moxaTimer, jiffies + HZ / 50);
394 /* Find the boards defined in source code */
396 for (i = 0; i < MAX_BOARDS; i++) {
397 if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
398 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
399 moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
400 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
401 moxa_boards[numBoards].numPorts = 8;
403 moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
404 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
405 moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
406 pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n",
408 moxa_brdname[moxa_boards[numBoards].boardType-1],
409 moxa_boards[numBoards].baseAddr);
413 /* Find the boards defined form module args. */
415 for (i = 0; i < MAX_BOARDS; i++) {
416 if ((type[i] == MOXA_BOARD_C218_ISA) ||
417 (type[i] == MOXA_BOARD_C320_ISA)) {
418 pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n",
419 numBoards + 1, moxa_brdname[type[i] - 1],
420 (unsigned long)baseaddr[i]);
421 if (numBoards >= MAX_BOARDS) {
422 printk(KERN_WARNING "More than %d MOXA "
423 "Intellio family boards found. Board "
424 "is ignored.\n", MAX_BOARDS);
427 moxa_boards[numBoards].boardType = type[i];
428 if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
429 moxa_boards[numBoards].numPorts = 8;
431 moxa_boards[numBoards].numPorts = numports[i];
432 moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
433 moxa_boards[numBoards].baseAddr = baseaddr[i];
440 retval = pci_register_driver(&moxa_pci_driver);
442 printk(KERN_ERR "Can't register moxa pci driver!\n");
448 for (i = 0; i < numBoards; i++) {
449 moxa_boards[i].basemem = ioremap(moxa_boards[i].baseAddr,
456 static void __exit moxa_exit(void)
460 del_timer_sync(&moxaTimer);
462 for (i = 0; i < MAX_PORTS; i++)
463 del_timer_sync(&moxa_ports[i].emptyTimer);
465 if (tty_unregister_driver(moxaDriver))
466 printk(KERN_ERR "Couldn't unregister MOXA Intellio family "
468 put_tty_driver(moxaDriver);
471 pci_unregister_driver(&moxa_pci_driver);
474 for (i = 0; i < MAX_BOARDS; i++)
475 if (moxa_boards[i].basemem)
476 iounmap(moxa_boards[i].basemem);
479 module_init(moxa_init);
480 module_exit(moxa_exit);
482 static int moxa_open(struct tty_struct *tty, struct file *filp)
484 struct moxa_port *ch;
489 if (port == MAX_PORTS) {
492 if (!MoxaPortIsValid(port)) {
493 tty->driver_data = NULL;
497 ch = &moxa_ports[port];
499 tty->driver_data = ch;
501 if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
503 moxa_set_tty_param(tty, tty->termios);
504 MoxaPortLineCtrl(ch->port, 1, 1);
505 MoxaPortEnable(ch->port);
506 ch->asyncflags |= ASYNC_INITIALIZED;
508 retval = moxa_block_till_ready(tty, filp, ch);
510 moxa_unthrottle(tty);
512 if (ch->type == PORT_16550A) {
513 MoxaSetFifo(ch->port, 1);
515 MoxaSetFifo(ch->port, 0);
521 static void moxa_close(struct tty_struct *tty, struct file *filp)
523 struct moxa_port *ch;
527 if (port == MAX_PORTS) {
530 if (!MoxaPortIsValid(port)) {
531 pr_debug("Invalid portno in moxa_close\n");
532 tty->driver_data = NULL;
535 if (tty->driver_data == NULL) {
538 if (tty_hung_up_p(filp)) {
541 ch = (struct moxa_port *) tty->driver_data;
543 if ((tty->count == 1) && (ch->count != 1)) {
544 printk(KERN_WARNING "moxa_close: bad serial port count; "
545 "tty->count is 1, ch->count is %d\n", ch->count);
548 if (--ch->count < 0) {
549 printk(KERN_WARNING "moxa_close: bad serial port count, "
550 "device=%s\n", tty->name);
556 ch->asyncflags |= ASYNC_CLOSING;
558 ch->cflag = tty->termios->c_cflag;
559 if (ch->asyncflags & ASYNC_INITIALIZED) {
560 moxa_setup_empty_event(tty);
561 tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
562 del_timer_sync(&moxa_ports[ch->port].emptyTimer);
565 MoxaPortFlushData(port, 2);
567 if (tty->driver->flush_buffer)
568 tty->driver->flush_buffer(tty);
569 tty_ldisc_flush(tty);
574 if (ch->blocked_open) {
575 if (ch->close_delay) {
576 msleep_interruptible(jiffies_to_msecs(ch->close_delay));
578 wake_up_interruptible(&ch->open_wait);
580 ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
581 complete_all(&ch->close_wait);
584 static int moxa_write(struct tty_struct *tty,
585 const unsigned char *buf, int count)
587 struct moxa_port *ch;
591 ch = (struct moxa_port *) tty->driver_data;
596 spin_lock_irqsave(&moxa_lock, flags);
597 len = MoxaPortWriteData(port, (unsigned char *) buf, count);
598 spin_unlock_irqrestore(&moxa_lock, flags);
600 /*********************************************
601 if ( !(ch->statusflags & LOWWAIT) &&
602 ((len != count) || (MoxaPortTxFree(port) <= 100)) )
603 ************************************************/
604 ch->statusflags |= LOWWAIT;
608 static int moxa_write_room(struct tty_struct *tty)
610 struct moxa_port *ch;
614 ch = (struct moxa_port *) tty->driver_data;
617 return (MoxaPortTxFree(ch->port));
620 static void moxa_flush_buffer(struct tty_struct *tty)
622 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
626 MoxaPortFlushData(ch->port, 1);
630 static int moxa_chars_in_buffer(struct tty_struct *tty)
633 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
636 * Sigh...I have to check if driver_data is NULL here, because
637 * if an open() fails, the TTY subsystem eventually calls
638 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
639 * routine. And since the open() failed, we return 0 here. TDJ
643 chars = MoxaPortTxQueue(ch->port);
646 * Make it possible to wakeup anything waiting for output
647 * in tty_ioctl.c, etc.
649 if (!(ch->statusflags & EMPTYWAIT))
650 moxa_setup_empty_event(tty);
655 static void moxa_flush_chars(struct tty_struct *tty)
658 * Don't think I need this, because this is called to empty the TX
659 * buffer for the 16450, 16550, etc.
663 static void moxa_put_char(struct tty_struct *tty, unsigned char c)
665 struct moxa_port *ch;
669 ch = (struct moxa_port *) tty->driver_data;
673 spin_lock_irqsave(&moxa_lock, flags);
674 MoxaPortWriteData(port, &c, 1);
675 spin_unlock_irqrestore(&moxa_lock, flags);
676 /************************************************
677 if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
678 *************************************************/
679 ch->statusflags |= LOWWAIT;
682 static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
684 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
686 int flag = 0, dtr, rts;
689 if ((port != MAX_PORTS) && (!ch))
692 MoxaPortGetLineOut(ch->port, &dtr, &rts);
697 dtr = MoxaPortLineStatus(ch->port);
707 static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
708 unsigned int set, unsigned int clear)
710 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
715 if ((port != MAX_PORTS) && (!ch))
718 MoxaPortGetLineOut(ch->port, &dtr, &rts);
723 if (clear & TIOCM_RTS)
725 if (clear & TIOCM_DTR)
727 MoxaPortLineCtrl(ch->port, dtr, rts);
731 static int moxa_ioctl(struct tty_struct *tty, struct file *file,
732 unsigned int cmd, unsigned long arg)
734 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
736 void __user *argp = (void __user *)arg;
740 if ((port != MAX_PORTS) && (!ch))
744 case TCSBRK: /* SVID version: non-zero arg --> no break */
745 retval = tty_check_change(tty);
748 moxa_setup_empty_event(tty);
749 tty_wait_until_sent(tty, 0);
751 MoxaPortSendBreak(ch->port, 0);
753 case TCSBRKP: /* support for POSIX tcsendbreak() */
754 retval = tty_check_change(tty);
757 moxa_setup_empty_event(tty);
758 tty_wait_until_sent(tty, 0);
759 MoxaPortSendBreak(ch->port, arg);
762 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
764 if(get_user(retval, (unsigned long __user *) argp))
767 tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
770 ch->asyncflags &= ~ASYNC_CHECK_CD;
772 ch->asyncflags |= ASYNC_CHECK_CD;
775 return moxa_get_serial_info(ch, argp);
778 return moxa_set_serial_info(ch, argp);
780 retval = MoxaDriverIoctl(cmd, arg, port);
785 static void moxa_throttle(struct tty_struct *tty)
787 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
789 ch->statusflags |= THROTTLE;
792 static void moxa_unthrottle(struct tty_struct *tty)
794 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
796 ch->statusflags &= ~THROTTLE;
799 static void moxa_set_termios(struct tty_struct *tty,
800 struct ktermios *old_termios)
802 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
806 moxa_set_tty_param(tty, old_termios);
807 if (!(old_termios->c_cflag & CLOCAL) &&
808 (tty->termios->c_cflag & CLOCAL))
809 wake_up_interruptible(&ch->open_wait);
812 static void moxa_stop(struct tty_struct *tty)
814 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
818 MoxaPortTxDisable(ch->port);
819 ch->statusflags |= TXSTOPPED;
823 static void moxa_start(struct tty_struct *tty)
825 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
830 if (!(ch->statusflags & TXSTOPPED))
833 MoxaPortTxEnable(ch->port);
834 ch->statusflags &= ~TXSTOPPED;
837 static void moxa_hangup(struct tty_struct *tty)
839 struct moxa_port *ch = (struct moxa_port *) tty->driver_data;
841 moxa_flush_buffer(tty);
845 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
847 wake_up_interruptible(&ch->open_wait);
850 static void moxa_poll(unsigned long ignored)
853 struct moxa_port *ch;
854 struct tty_struct *tp;
857 del_timer(&moxaTimer);
859 if (MoxaDriverPoll() < 0) {
860 mod_timer(&moxaTimer, jiffies + HZ / 50);
863 for (card = 0; card < MAX_BOARDS; card++) {
864 if ((ports = MoxaPortsOfCard(card)) <= 0)
866 ch = &moxa_ports[card * MAX_PORTS_PER_BOARD];
867 for (i = 0; i < ports; i++, ch++) {
868 if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
870 if (!(ch->statusflags & THROTTLE) &&
871 (MoxaPortRxQueue(ch->port) > 0))
872 moxa_receive_data(ch);
873 if ((tp = ch->tty) == 0)
875 if (ch->statusflags & LOWWAIT) {
876 if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
878 ch->statusflags &= ~LOWWAIT;
883 if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
884 tty_insert_flip_char(tp, 0, TTY_BREAK);
885 tty_schedule_flip(tp);
887 if (MoxaPortDCDChange(ch->port)) {
888 if (ch->asyncflags & ASYNC_CHECK_CD) {
889 if (MoxaPortDCDON(ch->port))
890 wake_up_interruptible(&ch->open_wait);
893 wake_up_interruptible(&ch->open_wait);
894 ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
901 mod_timer(&moxaTimer, jiffies + HZ / 50);
904 /******************************************************************************/
906 static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios)
908 register struct ktermios *ts;
909 struct moxa_port *ch;
910 int rts, cts, txflow, rxflow, xany, baud;
912 ch = (struct moxa_port *) tty->driver_data;
914 if (ts->c_cflag & CLOCAL)
915 ch->asyncflags &= ~ASYNC_CHECK_CD;
917 ch->asyncflags |= ASYNC_CHECK_CD;
918 rts = cts = txflow = rxflow = xany = 0;
919 if (ts->c_cflag & CRTSCTS)
921 if (ts->c_iflag & IXON)
923 if (ts->c_iflag & IXOFF)
925 if (ts->c_iflag & IXANY)
928 /* Clear the features we don't support */
929 ts->c_cflag &= ~CMSPAR;
930 MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
931 baud = MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
933 baud = tty_termios_baud_rate(old_termios);
934 /* Not put the baud rate into the termios data */
935 tty_encode_baud_rate(tty, baud, baud);
938 static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp,
939 struct moxa_port *ch)
941 DECLARE_WAITQUEUE(wait,current);
944 int do_clocal = C_CLOCAL(tty);
947 * If the device is in the middle of being closed, then block
948 * until it's done, and then try again.
950 if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
951 if (ch->asyncflags & ASYNC_CLOSING)
952 wait_for_completion_interruptible(&ch->close_wait);
953 #ifdef SERIAL_DO_RESTART
954 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
957 return (-ERESTARTSYS);
963 * If non-blocking mode is set, then make the check up front
966 if (filp->f_flags & O_NONBLOCK) {
967 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
971 * Block waiting for the carrier detect and the line to become free
974 add_wait_queue(&ch->open_wait, &wait);
975 pr_debug("block_til_ready before block: ttys%d, count = %d\n",
976 ch->port, ch->count);
977 spin_lock_irqsave(&moxa_lock, flags);
978 if (!tty_hung_up_p(filp))
981 spin_unlock_irqrestore(&moxa_lock, flags);
984 set_current_state(TASK_INTERRUPTIBLE);
985 if (tty_hung_up_p(filp) ||
986 !(ch->asyncflags & ASYNC_INITIALIZED)) {
987 #ifdef SERIAL_DO_RESTART
988 if (ch->asyncflags & ASYNC_HUP_NOTIFY)
991 retval = -ERESTARTSYS;
997 if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
998 MoxaPortDCDON(ch->port)))
1001 if (signal_pending(current)) {
1002 retval = -ERESTARTSYS;
1007 set_current_state(TASK_RUNNING);
1008 remove_wait_queue(&ch->open_wait, &wait);
1010 spin_lock_irqsave(&moxa_lock, flags);
1011 if (!tty_hung_up_p(filp))
1014 spin_unlock_irqrestore(&moxa_lock, flags);
1015 pr_debug("block_til_ready after blocking: ttys%d, count = %d\n",
1016 ch->port, ch->count);
1019 /* FIXME: review to see if we need to use set_bit on these */
1020 ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
1024 static void moxa_setup_empty_event(struct tty_struct *tty)
1026 struct moxa_port *ch = tty->driver_data;
1027 unsigned long flags;
1029 spin_lock_irqsave(&moxa_lock, flags);
1030 ch->statusflags |= EMPTYWAIT;
1031 mod_timer(&moxa_ports[ch->port].emptyTimer, jiffies + HZ);
1032 spin_unlock_irqrestore(&moxa_lock, flags);
1035 static void moxa_check_xmit_empty(unsigned long data)
1037 struct moxa_port *ch;
1039 ch = (struct moxa_port *) data;
1040 if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
1041 if (MoxaPortTxQueue(ch->port) == 0) {
1042 ch->statusflags &= ~EMPTYWAIT;
1043 tty_wakeup(ch->tty);
1046 mod_timer(&moxa_ports[ch->port].emptyTimer,
1047 round_jiffies(jiffies + HZ));
1049 ch->statusflags &= ~EMPTYWAIT;
1052 static void moxa_shut_down(struct moxa_port *ch)
1054 struct tty_struct *tp;
1056 if (!(ch->asyncflags & ASYNC_INITIALIZED))
1061 MoxaPortDisable(ch->port);
1064 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
1066 if (tp->termios->c_cflag & HUPCL)
1067 MoxaPortLineCtrl(ch->port, 0, 0);
1069 ch->asyncflags &= ~ASYNC_INITIALIZED;
1072 static void moxa_receive_data(struct moxa_port *ch)
1074 struct tty_struct *tp;
1075 struct ktermios *ts;
1076 unsigned long flags;
1082 /**************************************************
1083 if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
1084 *****************************************************/
1086 MoxaPortFlushData(ch->port, 0);
1089 spin_lock_irqsave(&moxa_lock, flags);
1090 MoxaPortReadData(ch->port, tp);
1091 spin_unlock_irqrestore(&moxa_lock, flags);
1092 tty_schedule_flip(tp);
1095 #define Magic_code 0x404
1098 * System Configuration
1101 * for C218 BIOS initialization
1103 #define C218_ConfBase 0x800
1104 #define C218_status (C218_ConfBase + 0) /* BIOS running status */
1105 #define C218_diag (C218_ConfBase + 2) /* diagnostic status */
1106 #define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */
1107 #define C218DLoad_len (C218_ConfBase + 6) /* WORD */
1108 #define C218check_sum (C218_ConfBase + 8) /* BYTE */
1109 #define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */
1110 #define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */
1111 #define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */
1112 #define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */
1113 #define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */
1115 #define C218_LoadBuf 0x0F00
1116 #define C218_KeyCode 0x218
1117 #define CP204J_KeyCode 0x204
1120 * for C320 BIOS initialization
1122 #define C320_ConfBase 0x800
1123 #define C320_LoadBuf 0x0f00
1124 #define STS_init 0x05 /* for C320_status */
1126 #define C320_status C320_ConfBase + 0 /* BIOS running status */
1127 #define C320_diag C320_ConfBase + 2 /* diagnostic status */
1128 #define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */
1129 #define C320DLoad_len C320_ConfBase + 6 /* WORD */
1130 #define C320check_sum C320_ConfBase + 8 /* WORD */
1131 #define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */
1132 #define C320bapi_len C320_ConfBase + 0x0c /* WORD */
1133 #define C320UART_no C320_ConfBase + 0x0e /* WORD */
1135 #define C320_KeyCode 0x320
1137 #define FixPage_addr 0x0000 /* starting addr of static page */
1138 #define DynPage_addr 0x2000 /* starting addr of dynamic page */
1139 #define C218_start 0x3000 /* starting addr of C218 BIOS prg */
1140 #define Control_reg 0x1ff0 /* select page and reset control */
1141 #define HW_reset 0x80
1146 #define FC_CardReset 0x80
1147 #define FC_ChannelReset 1 /* C320 firmware not supported */
1148 #define FC_EnableCH 2
1149 #define FC_DisableCH 3
1150 #define FC_SetParam 4
1151 #define FC_SetMode 5
1152 #define FC_SetRate 6
1153 #define FC_LineControl 7
1154 #define FC_LineStatus 8
1155 #define FC_XmitControl 9
1156 #define FC_FlushQueue 10
1157 #define FC_SendBreak 11
1158 #define FC_StopBreak 12
1159 #define FC_LoopbackON 13
1160 #define FC_LoopbackOFF 14
1161 #define FC_ClrIrqTable 15
1162 #define FC_SendXon 16
1163 #define FC_SetTermIrq 17 /* C320 firmware not supported */
1164 #define FC_SetCntIrq 18 /* C320 firmware not supported */
1165 #define FC_SetBreakIrq 19
1166 #define FC_SetLineIrq 20
1167 #define FC_SetFlowCtl 21
1168 #define FC_GenIrq 22
1169 #define FC_InCD180 23
1170 #define FC_OutCD180 24
1171 #define FC_InUARTreg 23
1172 #define FC_OutUARTreg 24
1173 #define FC_SetXonXoff 25
1174 #define FC_OutCD180CCR 26
1175 #define FC_ExtIQueue 27
1176 #define FC_ExtOQueue 28
1177 #define FC_ClrLineIrq 29
1178 #define FC_HWFlowCtl 30
1179 #define FC_GetClockRate 35
1180 #define FC_SetBaud 36
1181 #define FC_SetDataMode 41
1182 #define FC_GetCCSR 43
1183 #define FC_GetDataError 45
1184 #define FC_RxControl 50
1185 #define FC_ImmSend 51
1186 #define FC_SetXonState 52
1187 #define FC_SetXoffState 53
1188 #define FC_SetRxFIFOTrig 54
1189 #define FC_SetTxFIFOCnt 55
1190 #define FC_UnixRate 56
1191 #define FC_UnixResetTimer 57
1193 #define RxFIFOTrig1 0
1194 #define RxFIFOTrig4 1
1195 #define RxFIFOTrig8 2
1196 #define RxFIFOTrig14 3
1201 #define DRAM_global 0
1202 #define INT_data (DRAM_global + 0)
1203 #define Config_base (DRAM_global + 0x108)
1205 #define IRQindex (INT_data + 0)
1206 #define IRQpending (INT_data + 4)
1207 #define IRQtable (INT_data + 8)
1212 #define IntrRx 0x01 /* receiver data O.K. */
1213 #define IntrTx 0x02 /* transmit buffer empty */
1214 #define IntrFunc 0x04 /* function complete */
1215 #define IntrBreak 0x08 /* received break */
1216 #define IntrLine 0x10 /* line status change
1218 #define IntrIntr 0x20 /* received INTR code */
1219 #define IntrQuit 0x40 /* received QUIT code */
1220 #define IntrEOF 0x80 /* received EOF code */
1222 #define IntrRxTrigger 0x100 /* rx data count reach tigger value */
1223 #define IntrTxTrigger 0x200 /* tx data count below trigger value */
1225 #define Magic_no (Config_base + 0)
1226 #define Card_model_no (Config_base + 2)
1227 #define Total_ports (Config_base + 4)
1228 #define Module_cnt (Config_base + 8)
1229 #define Module_no (Config_base + 10)
1230 #define Timer_10ms (Config_base + 14)
1231 #define Disable_IRQ (Config_base + 20)
1232 #define TMS320_PORT1 (Config_base + 22)
1233 #define TMS320_PORT2 (Config_base + 24)
1234 #define TMS320_CLOCK (Config_base + 26)
1237 * DATA BUFFER in DRAM
1239 #define Extern_table 0x400 /* Base address of the external table
1240 (24 words * 64) total 3K bytes
1241 (24 words * 128) total 6K bytes */
1242 #define Extern_size 0x60 /* 96 bytes */
1243 #define RXrptr 0x00 /* read pointer for RX buffer */
1244 #define RXwptr 0x02 /* write pointer for RX buffer */
1245 #define TXrptr 0x04 /* read pointer for TX buffer */
1246 #define TXwptr 0x06 /* write pointer for TX buffer */
1247 #define HostStat 0x08 /* IRQ flag and general flag */
1248 #define FlagStat 0x0A
1249 #define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */
1250 /* x x x x | | | | */
1251 /* | | | + CTS flow */
1252 /* | | +--- RTS flow */
1253 /* | +------ TX Xon/Xoff */
1254 /* +--------- RX Xon/Xoff */
1255 #define Break_cnt 0x0E /* received break count */
1256 #define CD180TXirq 0x10 /* if non-0: enable TX irq */
1257 #define RX_mask 0x12
1258 #define TX_mask 0x14
1259 #define Ofs_rxb 0x16
1260 #define Ofs_txb 0x18
1261 #define Page_rxb 0x1A
1262 #define Page_txb 0x1C
1263 #define EndPage_rxb 0x1E
1264 #define EndPage_txb 0x20
1265 #define Data_error 0x22
1266 #define RxTrigger 0x28
1267 #define TxTrigger 0x2a
1269 #define rRXwptr 0x34
1270 #define Low_water 0x36
1272 #define FuncCode 0x40
1273 #define FuncArg 0x42
1274 #define FuncArg1 0x44
1276 #define C218rx_size 0x2000 /* 8K bytes */
1277 #define C218tx_size 0x8000 /* 32K bytes */
1279 #define C218rx_mask (C218rx_size - 1)
1280 #define C218tx_mask (C218tx_size - 1)
1282 #define C320p8rx_size 0x2000
1283 #define C320p8tx_size 0x8000
1284 #define C320p8rx_mask (C320p8rx_size - 1)
1285 #define C320p8tx_mask (C320p8tx_size - 1)
1287 #define C320p16rx_size 0x2000
1288 #define C320p16tx_size 0x4000
1289 #define C320p16rx_mask (C320p16rx_size - 1)
1290 #define C320p16tx_mask (C320p16tx_size - 1)
1292 #define C320p24rx_size 0x2000
1293 #define C320p24tx_size 0x2000
1294 #define C320p24rx_mask (C320p24rx_size - 1)
1295 #define C320p24tx_mask (C320p24tx_size - 1)
1297 #define C320p32rx_size 0x1000
1298 #define C320p32tx_size 0x1000
1299 #define C320p32rx_mask (C320p32rx_size - 1)
1300 #define C320p32tx_mask (C320p32tx_size - 1)
1302 #define Page_size 0x2000
1303 #define Page_mask (Page_size - 1)
1304 #define C218rx_spage 3
1305 #define C218tx_spage 4
1306 #define C218rx_pageno 1
1307 #define C218tx_pageno 4
1308 #define C218buf_pageno 5
1310 #define C320p8rx_spage 3
1311 #define C320p8tx_spage 4
1312 #define C320p8rx_pgno 1
1313 #define C320p8tx_pgno 4
1314 #define C320p8buf_pgno 5
1316 #define C320p16rx_spage 3
1317 #define C320p16tx_spage 4
1318 #define C320p16rx_pgno 1
1319 #define C320p16tx_pgno 2
1320 #define C320p16buf_pgno 3
1322 #define C320p24rx_spage 3
1323 #define C320p24tx_spage 4
1324 #define C320p24rx_pgno 1
1325 #define C320p24tx_pgno 1
1326 #define C320p24buf_pgno 2
1328 #define C320p32rx_spage 3
1329 #define C320p32tx_ofs C320p32rx_size
1330 #define C320p32tx_spage 3
1331 #define C320p32buf_pgno 1
1336 #define WakeupRx 0x01
1337 #define WakeupTx 0x02
1338 #define WakeupBreak 0x08
1339 #define WakeupLine 0x10
1340 #define WakeupIntr 0x20
1341 #define WakeupQuit 0x40
1342 #define WakeupEOF 0x80 /* used in VTIME control */
1343 #define WakeupRxTrigger 0x100
1344 #define WakeupTxTrigger 0x200
1348 #define Rx_over 0x01
1349 #define Xoff_state 0x02
1350 #define Tx_flowOff 0x04
1351 #define Tx_enable 0x08
1352 #define CTS_state 0x10
1353 #define DSR_state 0x20
1354 #define DCD_state 0x80
1358 #define CTS_FlowCtl 1
1359 #define RTS_FlowCtl 2
1360 #define Tx_FlowCtl 4
1361 #define Rx_FlowCtl 8
1362 #define IXM_IXANY 0x10
1364 #define LowWater 128
1372 /* mode definition */
1378 #define MX_STOP1 0x00
1379 #define MX_STOP15 0x04
1380 #define MX_STOP2 0x08
1382 #define MX_PARNONE 0x00
1383 #define MX_PAREVEN 0x40
1384 #define MX_PARODD 0xC0
1392 int rxcnt[MAX_PORTS];
1393 int txcnt[MAX_PORTS];
1396 #define DCD_changed 0x01
1397 #define DCD_oldstate 0x80
1399 static unsigned char moxaBuff[10240];
1400 static int moxaLowWaterChk;
1401 static int moxaCard;
1402 static struct mon_str moxaLog;
1403 static int moxaFuncTout = HZ / 2;
1405 static void moxafunc(void __iomem *, int, ushort);
1406 static void moxa_wait_finish(void __iomem *);
1407 static void moxa_low_water_check(void __iomem *);
1408 static int moxaloadbios(int, unsigned char __user *, int);
1409 static int moxafindcard(int);
1410 static int moxaload320b(int, unsigned char __user *, int);
1411 static int moxaloadcode(int, unsigned char __user *, int);
1412 static int moxaloadc218(int, void __iomem *, int);
1413 static int moxaloadc320(int, void __iomem *, int, int *);
1415 /*****************************************************************************
1416 * Driver level functions: *
1417 * 1. MoxaDriverInit(void); *
1418 * 2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); *
1419 * 3. MoxaDriverPoll(void); *
1420 *****************************************************************************/
1421 void MoxaDriverInit(void)
1423 struct moxa_port *p;
1426 moxaFuncTout = HZ / 2; /* 500 mini-seconds */
1429 moxaLowWaterChk = 0;
1430 for (i = 0; i < MAX_PORTS; i++) {
1435 moxaLog.rxcnt[i] = 0;
1436 moxaLog.txcnt[i] = 0;
1441 #define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */
1442 #define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */
1443 #define MOXA_INIT_DRIVER (MOXA + 6) /* moxaCard=0 */
1444 #define MOXA_LOAD_BIOS (MOXA + 9) /* download BIOS */
1445 #define MOXA_FIND_BOARD (MOXA + 10) /* Check if MOXA card exist? */
1446 #define MOXA_LOAD_C320B (MOXA + 11) /* download 320B firmware */
1447 #define MOXA_LOAD_CODE (MOXA + 12) /* download firmware */
1448 #define MOXA_GETDATACOUNT (MOXA + 23)
1449 #define MOXA_GET_IOQUEUE (MOXA + 27)
1450 #define MOXA_FLUSH_QUEUE (MOXA + 28)
1451 #define MOXA_GET_CONF (MOXA + 35) /* configuration */
1452 #define MOXA_GET_MAJOR (MOXA + 63)
1453 #define MOXA_GET_CUMAJOR (MOXA + 64)
1454 #define MOXA_GETMSTATUS (MOXA + 65)
1462 static struct dl_str dltmp;
1464 void MoxaPortFlushData(int port, int mode)
1466 void __iomem *ofsAddr;
1467 if ((mode < 0) || (mode > 2))
1469 ofsAddr = moxa_ports[port].tableAddr;
1470 moxafunc(ofsAddr, FC_FlushQueue, mode);
1472 moxa_ports[port].lowChkFlag = 0;
1473 moxa_low_water_check(ofsAddr);
1477 int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
1481 int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
1482 void __user *argp = (void __user *)arg;
1484 if (port == MAX_PORTS) {
1485 if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
1486 (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
1487 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
1488 (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
1489 (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
1494 if(copy_to_user(argp, &moxa_boards, MAX_BOARDS *
1495 sizeof(struct moxa_board_conf)))
1498 case MOXA_INIT_DRIVER:
1499 if ((int) arg == 0x404)
1502 case MOXA_GETDATACOUNT:
1503 moxaLog.tick = jiffies;
1504 if(copy_to_user(argp, &moxaLog, sizeof(struct mon_str)))
1507 case MOXA_FLUSH_QUEUE:
1508 MoxaPortFlushData(port, arg);
1510 case MOXA_GET_IOQUEUE: {
1511 struct moxaq_str __user *argm = argp;
1512 struct moxaq_str tmp;
1514 for (i = 0; i < MAX_PORTS; i++, argm++) {
1515 memset(&tmp, 0, sizeof(tmp));
1516 if (moxa_ports[i].chkPort) {
1517 tmp.inq = MoxaPortRxQueue(i);
1518 tmp.outq = MoxaPortTxQueue(i);
1520 if (copy_to_user(argm, &tmp, sizeof(tmp)))
1524 } case MOXA_GET_OQUEUE:
1525 i = MoxaPortTxQueue(port);
1526 return put_user(i, (unsigned long __user *)argp);
1527 case MOXA_GET_IQUEUE:
1528 i = MoxaPortRxQueue(port);
1529 return put_user(i, (unsigned long __user *)argp);
1530 case MOXA_GET_MAJOR:
1531 if(copy_to_user(argp, &ttymajor, sizeof(int)))
1534 case MOXA_GET_CUMAJOR:
1536 if(copy_to_user(argp, &i, sizeof(int)))
1539 case MOXA_GETMSTATUS: {
1540 struct mxser_mstatus __user *argm = argp;
1541 struct mxser_mstatus tmp;
1542 struct moxa_port *p;
1544 for (i = 0; i < MAX_PORTS; i++, argm++) {
1546 memset(&tmp, 0, sizeof(tmp));
1550 status = MoxaPortLineStatus(p->port);
1559 if (!p->tty || !p->tty->termios)
1560 tmp.cflag = p->cflag;
1562 tmp.cflag = p->tty->termios->c_cflag;
1564 if (copy_to_user(argm, &tmp, sizeof(tmp)))
1569 return (-ENOIOCTLCMD);
1570 case MOXA_LOAD_BIOS:
1571 case MOXA_FIND_BOARD:
1572 case MOXA_LOAD_C320B:
1573 case MOXA_LOAD_CODE:
1574 if (!capable(CAP_SYS_RAWIO))
1579 if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
1581 if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS || dltmp.len < 0)
1586 case MOXA_LOAD_BIOS:
1587 i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
1589 case MOXA_FIND_BOARD:
1590 return moxafindcard(dltmp.cardno);
1591 case MOXA_LOAD_C320B:
1592 moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
1593 default: /* to keep gcc happy */
1595 case MOXA_LOAD_CODE:
1596 i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
1604 int MoxaDriverPoll(void)
1606 struct moxa_board_conf *brd;
1607 register ushort temp;
1609 void __iomem *ofsAddr;
1615 for (card = 0; card < MAX_BOARDS; card++) {
1616 brd = &moxa_boards[card];
1617 if (brd->loadstat == 0)
1619 if ((ports = brd->numPorts) == 0)
1621 if (readb(brd->intPend) == 0xff) {
1622 ip = brd->intTable + readb(brd->intNdx);
1623 p = card * MAX_PORTS_PER_BOARD;
1625 for (port = 0; port < ports; port += 2, p++) {
1626 if ((temp = readw(ip + port)) != 0) {
1627 writew(0, ip + port);
1628 ofsAddr = moxa_ports[p].tableAddr;
1630 writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
1631 if (temp & IntrBreak) {
1632 moxa_ports[p].breakCnt++;
1634 if (temp & IntrLine) {
1635 if (readb(ofsAddr + FlagStat) & DCD_state) {
1636 if ((moxa_ports[p].DCDState & DCD_oldstate) == 0)
1637 moxa_ports[p].DCDState = (DCD_oldstate |
1640 if (moxa_ports[p].DCDState & DCD_oldstate)
1641 moxa_ports[p].DCDState = DCD_changed;
1646 writeb(0, brd->intPend);
1648 if (moxaLowWaterChk) {
1649 p = card * MAX_PORTS_PER_BOARD;
1650 for (port = 0; port < ports; port++, p++) {
1651 if (moxa_ports[p].lowChkFlag) {
1652 moxa_ports[p].lowChkFlag = 0;
1653 ofsAddr = moxa_ports[p].tableAddr;
1654 moxa_low_water_check(ofsAddr);
1659 moxaLowWaterChk = 0;
1663 /*****************************************************************************
1664 * Card level function: *
1665 * 1. MoxaPortsOfCard(int cardno); *
1666 *****************************************************************************/
1667 int MoxaPortsOfCard(int cardno)
1670 if (moxa_boards[cardno].boardType == 0)
1672 return (moxa_boards[cardno].numPorts);
1675 /*****************************************************************************
1676 * Port level functions: *
1677 * 1. MoxaPortIsValid(int port); *
1678 * 2. MoxaPortEnable(int port); *
1679 * 3. MoxaPortDisable(int port); *
1680 * 4. MoxaPortGetMaxBaud(int port); *
1681 * 6. MoxaPortSetBaud(int port, long baud); *
1682 * 8. MoxaPortSetTermio(int port, unsigned char *termio); *
1683 * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); *
1684 * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); *
1685 * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); *
1686 * 12. MoxaPortLineStatus(int port); *
1687 * 13. MoxaPortDCDChange(int port); *
1688 * 14. MoxaPortDCDON(int port); *
1689 * 15. MoxaPortFlushData(int port, int mode); *
1690 * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
1691 * 17. MoxaPortReadData(int port, struct tty_struct *tty); *
1692 * 20. MoxaPortTxQueue(int port); *
1693 * 21. MoxaPortTxFree(int port); *
1694 * 22. MoxaPortRxQueue(int port); *
1695 * 24. MoxaPortTxDisable(int port); *
1696 * 25. MoxaPortTxEnable(int port); *
1697 * 27. MoxaPortResetBrkCnt(int port); *
1698 * 30. MoxaPortSendBreak(int port, int ticks); *
1699 *****************************************************************************/
1701 * Moxa Port Number Description:
1703 * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
1704 * the port number using in MOXA driver functions will be 0 to 31 for
1705 * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
1706 * to 127 for fourth. For example, if you setup three MOXA boards,
1707 * first board is C218, second board is C320-16 and third board is
1708 * C320-32. The port number of first board (C218 - 8 ports) is from
1709 * 0 to 7. The port number of second board (C320 - 16 ports) is form
1710 * 32 to 47. The port number of third board (C320 - 32 ports) is from
1711 * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
1712 * 127 will be invalid.
1715 * Moxa Functions Description:
1717 * Function 1: Driver initialization routine, this routine must be
1718 * called when initialized driver.
1720 * void MoxaDriverInit();
1723 * Function 2: Moxa driver private IOCTL command processing.
1725 * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
1727 * unsigned int cmd : IOCTL command
1728 * unsigned long arg : IOCTL argument
1729 * int port : port number (0 - 127)
1736 * Function 3: Moxa driver polling process routine.
1738 * int MoxaDriverPoll(void);
1740 * return: 0 ; polling O.K.
1741 * -1 : no any Moxa card.
1744 * Function 4: Get the ports of this card.
1746 * int MoxaPortsOfCard(int cardno);
1748 * int cardno : card number (0 - 3)
1750 * return: 0 : this card is invalid
1754 * Function 5: Check this port is valid or invalid
1756 * int MoxaPortIsValid(int port);
1757 * int port : port number (0 - 127, ref port description)
1759 * return: 0 : this port is invalid
1760 * 1 : this port is valid
1763 * Function 6: Enable this port to start Tx/Rx data.
1765 * void MoxaPortEnable(int port);
1766 * int port : port number (0 - 127)
1769 * Function 7: Disable this port
1771 * void MoxaPortDisable(int port);
1772 * int port : port number (0 - 127)
1775 * Function 8: Get the maximun available baud rate of this port.
1777 * long MoxaPortGetMaxBaud(int port);
1778 * int port : port number (0 - 127)
1780 * return: 0 : this port is invalid
1781 * 38400/57600/115200 bps
1784 * Function 10: Setting baud rate of this port.
1786 * long MoxaPortSetBaud(int port, long baud);
1787 * int port : port number (0 - 127)
1788 * long baud : baud rate (50 - 115200)
1790 * return: 0 : this port is invalid or baud < 50
1791 * 50 - 115200 : the real baud rate set to the port, if
1792 * the argument baud is large than maximun
1793 * available baud rate, the real setting
1794 * baud rate will be the maximun baud rate.
1797 * Function 12: Configure the port.
1799 * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud);
1800 * int port : port number (0 - 127)
1801 * struct ktermios * termio : termio structure pointer
1802 * speed_t baud : baud rate
1804 * return: -1 : this port is invalid or termio == NULL
1808 * Function 13: Get the DTR/RTS state of this port.
1810 * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
1811 * int port : port number (0 - 127)
1812 * int * dtrState : pointer to INT to receive the current DTR
1813 * state. (if NULL, this function will not
1814 * write to this address)
1815 * int * rtsState : pointer to INT to receive the current RTS
1816 * state. (if NULL, this function will not
1817 * write to this address)
1819 * return: -1 : this port is invalid
1823 * Function 14: Setting the DTR/RTS output state of this port.
1825 * void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
1826 * int port : port number (0 - 127)
1827 * int dtrState : DTR output state (0: off, 1: on)
1828 * int rtsState : RTS output state (0: off, 1: on)
1831 * Function 15: Setting the flow control of this port.
1833 * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
1834 * int txFlow,int xany);
1835 * int port : port number (0 - 127)
1836 * int rtsFlow : H/W RTS flow control (0: no, 1: yes)
1837 * int ctsFlow : H/W CTS flow control (0: no, 1: yes)
1838 * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes)
1839 * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes)
1840 * int xany : S/W XANY flow control (0: no, 1: yes)
1843 * Function 16: Get ths line status of this port
1845 * int MoxaPortLineStatus(int port);
1846 * int port : port number (0 - 127)
1848 * return: Bit 0 - CTS state (0: off, 1: on)
1849 * Bit 1 - DSR state (0: off, 1: on)
1850 * Bit 2 - DCD state (0: off, 1: on)
1853 * Function 17: Check the DCD state has changed since the last read
1856 * int MoxaPortDCDChange(int port);
1857 * int port : port number (0 - 127)
1859 * return: 0 : no changed
1860 * 1 : DCD has changed
1863 * Function 18: Check ths current DCD state is ON or not.
1865 * int MoxaPortDCDON(int port);
1866 * int port : port number (0 - 127)
1868 * return: 0 : DCD off
1872 * Function 19: Flush the Rx/Tx buffer data of this port.
1874 * void MoxaPortFlushData(int port, int mode);
1875 * int port : port number (0 - 127)
1877 * 0 : flush the Rx buffer
1878 * 1 : flush the Tx buffer
1879 * 2 : flush the Rx and Tx buffer
1882 * Function 20: Write data.
1884 * int MoxaPortWriteData(int port, unsigned char * buffer, int length);
1885 * int port : port number (0 - 127)
1886 * unsigned char * buffer : pointer to write data buffer.
1887 * int length : write data length
1889 * return: 0 - length : real write data length
1892 * Function 21: Read data.
1894 * int MoxaPortReadData(int port, struct tty_struct *tty);
1895 * int port : port number (0 - 127)
1896 * struct tty_struct *tty : tty for data
1898 * return: 0 - length : real read data length
1901 * Function 24: Get the Tx buffer current queued data bytes
1903 * int MoxaPortTxQueue(int port);
1904 * int port : port number (0 - 127)
1906 * return: .. : Tx buffer current queued data bytes
1909 * Function 25: Get the Tx buffer current free space
1911 * int MoxaPortTxFree(int port);
1912 * int port : port number (0 - 127)
1914 * return: .. : Tx buffer current free space
1917 * Function 26: Get the Rx buffer current queued data bytes
1919 * int MoxaPortRxQueue(int port);
1920 * int port : port number (0 - 127)
1922 * return: .. : Rx buffer current queued data bytes
1925 * Function 28: Disable port data transmission.
1927 * void MoxaPortTxDisable(int port);
1928 * int port : port number (0 - 127)
1931 * Function 29: Enable port data transmission.
1933 * void MoxaPortTxEnable(int port);
1934 * int port : port number (0 - 127)
1937 * Function 31: Get the received BREAK signal count and reset it.
1939 * int MoxaPortResetBrkCnt(int port);
1940 * int port : port number (0 - 127)
1942 * return: 0 - .. : BREAK signal count
1945 * Function 34: Send out a BREAK signal.
1947 * void MoxaPortSendBreak(int port, int ms100);
1948 * int port : port number (0 - 127)
1949 * int ms100 : break signal time interval.
1950 * unit: 100 mini-second. if ms100 == 0, it will
1951 * send out a about 250 ms BREAK signal.
1954 int MoxaPortIsValid(int port)
1959 if (moxa_ports[port].chkPort == 0)
1964 void MoxaPortEnable(int port)
1966 void __iomem *ofsAddr;
1967 int MoxaPortLineStatus(int);
1968 short lowwater = 512;
1970 ofsAddr = moxa_ports[port].tableAddr;
1971 writew(lowwater, ofsAddr + Low_water);
1972 moxa_ports[port].breakCnt = 0;
1973 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
1974 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
1975 moxafunc(ofsAddr, FC_SetBreakIrq, 0);
1977 writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
1980 moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
1981 moxafunc(ofsAddr, FC_FlushQueue, 2);
1983 moxafunc(ofsAddr, FC_EnableCH, Magic_code);
1984 MoxaPortLineStatus(port);
1987 void MoxaPortDisable(int port)
1989 void __iomem *ofsAddr = moxa_ports[port].tableAddr;
1991 moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */
1992 moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
1993 writew(0, ofsAddr + HostStat);
1994 moxafunc(ofsAddr, FC_DisableCH, Magic_code);
1997 long MoxaPortGetMaxBaud(int port)
1999 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2000 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
2007 long MoxaPortSetBaud(int port, long baud)
2009 void __iomem *ofsAddr;
2013 if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
2015 ofsAddr = moxa_ports[port].tableAddr;
2019 clock = 614400L; /* for 9.8304 Mhz : max. 38400 bps */
2020 else if (max == 57600L)
2021 clock = 691200L; /* for 11.0592 Mhz : max. 57600 bps */
2023 clock = 921600L; /* for 14.7456 Mhz : max. 115200 bps */
2025 moxafunc(ofsAddr, FC_SetBaud, val);
2027 moxa_ports[port].curBaud = baud;
2031 int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud)
2033 void __iomem *ofsAddr;
2037 if (moxa_ports[port].chkPort == 0 || termio == 0)
2039 ofsAddr = moxa_ports[port].tableAddr;
2040 cflag = termio->c_cflag; /* termio->c_cflag */
2042 mode = termio->c_cflag & CSIZE;
2045 else if (mode == CS6)
2047 else if (mode == CS7)
2049 else if (mode == CS8)
2052 if (termio->c_cflag & CSTOPB) {
2060 if (termio->c_cflag & PARENB) {
2061 if (termio->c_cflag & PARODD)
2068 moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);
2070 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2071 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2072 if (baud >= 921600L)
2075 baud = MoxaPortSetBaud(port, baud);
2077 if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
2078 writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
2079 writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
2080 writeb(FC_SetXonXoff, ofsAddr + FuncCode);
2081 moxa_wait_finish(ofsAddr);
2087 int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
2090 if (!MoxaPortIsValid(port))
2093 if (moxa_ports[port].lineCtrl & DTR_ON)
2099 if (moxa_ports[port].lineCtrl & RTS_ON)
2107 void MoxaPortLineCtrl(int port, int dtr, int rts)
2109 void __iomem *ofsAddr;
2112 ofsAddr = moxa_ports[port].tableAddr;
2118 moxa_ports[port].lineCtrl = mode;
2119 moxafunc(ofsAddr, FC_LineControl, mode);
2122 void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
2124 void __iomem *ofsAddr;
2127 ofsAddr = moxa_ports[port].tableAddr;
2130 mode |= RTS_FlowCtl;
2132 mode |= CTS_FlowCtl;
2139 moxafunc(ofsAddr, FC_SetFlowCtl, mode);
2142 int MoxaPortLineStatus(int port)
2144 void __iomem *ofsAddr;
2147 ofsAddr = moxa_ports[port].tableAddr;
2148 if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
2149 (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
2150 moxafunc(ofsAddr, FC_LineStatus, 0);
2151 val = readw(ofsAddr + FuncArg);
2153 val = readw(ofsAddr + FlagStat) >> 4;
2158 if ((moxa_ports[port].DCDState & DCD_oldstate) == 0)
2159 moxa_ports[port].DCDState = (DCD_oldstate | DCD_changed);
2161 if (moxa_ports[port].DCDState & DCD_oldstate)
2162 moxa_ports[port].DCDState = DCD_changed;
2168 int MoxaPortDCDChange(int port)
2172 if (moxa_ports[port].chkPort == 0)
2174 n = moxa_ports[port].DCDState;
2175 moxa_ports[port].DCDState &= ~DCD_changed;
2180 int MoxaPortDCDON(int port)
2184 if (moxa_ports[port].chkPort == 0)
2186 if (moxa_ports[port].DCDState & DCD_oldstate)
2193 int MoxaPortWriteData(int port, unsigned char * buffer, int len)
2198 ushort head, tx_mask, spage, epage;
2199 ushort pageno, pageofs, bufhead;
2200 void __iomem *baseAddr, *ofsAddr, *ofs;
2202 ofsAddr = moxa_ports[port].tableAddr;
2203 baseAddr = moxa_boards[port / MAX_PORTS_PER_BOARD].basemem;
2204 tx_mask = readw(ofsAddr + TX_mask);
2205 spage = readw(ofsAddr + Page_txb);
2206 epage = readw(ofsAddr + EndPage_txb);
2207 tail = readw(ofsAddr + TXwptr);
2208 head = readw(ofsAddr + TXrptr);
2209 c = (head > tail) ? (head - tail - 1)
2210 : (head - tail + tx_mask);
2213 moxaLog.txcnt[port] += c;
2215 if (spage == epage) {
2216 bufhead = readw(ofsAddr + Ofs_txb);
2217 writew(spage, baseAddr + Control_reg);
2220 len = head - tail - 1;
2222 len = tx_mask + 1 - tail;
2223 len = (c > len) ? len : c;
2224 ofs = baseAddr + DynPage_addr + bufhead + tail;
2225 for (i = 0; i < len; i++)
2226 writeb(*buffer++, ofs + i);
2227 tail = (tail + len) & tx_mask;
2230 writew(tail, ofsAddr + TXwptr);
2233 pageno = spage + (tail >> 13);
2234 pageofs = tail & Page_mask;
2236 cnt = Page_size - pageofs;
2240 writeb(pageno, baseAddr + Control_reg);
2241 ofs = baseAddr + DynPage_addr + pageofs;
2242 for (i = 0; i < cnt; i++)
2243 writeb(*buffer++, ofs + i);
2245 writew((tail + len) & tx_mask, ofsAddr + TXwptr);
2248 if (++pageno == epage)
2253 writeb(1, ofsAddr + CD180TXirq); /* start to send */
2257 int MoxaPortReadData(int port, struct tty_struct *tty)
2259 register ushort head, pageofs;
2260 int i, count, cnt, len, total, remain;
2261 ushort tail, rx_mask, spage, epage;
2262 ushort pageno, bufhead;
2263 void __iomem *baseAddr, *ofsAddr, *ofs;
2265 ofsAddr = moxa_ports[port].tableAddr;
2266 baseAddr = moxa_boards[port / MAX_PORTS_PER_BOARD].basemem;
2267 head = readw(ofsAddr + RXrptr);
2268 tail = readw(ofsAddr + RXwptr);
2269 rx_mask = readw(ofsAddr + RX_mask);
2270 spage = readw(ofsAddr + Page_rxb);
2271 epage = readw(ofsAddr + EndPage_rxb);
2272 count = (tail >= head) ? (tail - head)
2273 : (tail - head + rx_mask + 1);
2278 remain = count - total;
2279 moxaLog.rxcnt[port] += total;
2281 if (spage == epage) {
2282 bufhead = readw(ofsAddr + Ofs_rxb);
2283 writew(spage, baseAddr + Control_reg);
2288 len = rx_mask + 1 - head;
2289 len = (count > len) ? len : count;
2290 ofs = baseAddr + DynPage_addr + bufhead + head;
2291 for (i = 0; i < len; i++)
2292 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2293 head = (head + len) & rx_mask;
2296 writew(head, ofsAddr + RXrptr);
2299 pageno = spage + (head >> 13);
2300 pageofs = head & Page_mask;
2302 cnt = Page_size - pageofs;
2306 writew(pageno, baseAddr + Control_reg);
2307 ofs = baseAddr + DynPage_addr + pageofs;
2308 for (i = 0; i < cnt; i++)
2309 tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
2311 writew((head + len) & rx_mask, ofsAddr + RXrptr);
2314 if (++pageno == epage)
2319 if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
2320 moxaLowWaterChk = 1;
2321 moxa_ports[port].lowChkFlag = 1;
2327 int MoxaPortTxQueue(int port)
2329 void __iomem *ofsAddr;
2330 ushort rptr, wptr, mask;
2333 ofsAddr = moxa_ports[port].tableAddr;
2334 rptr = readw(ofsAddr + TXrptr);
2335 wptr = readw(ofsAddr + TXwptr);
2336 mask = readw(ofsAddr + TX_mask);
2337 len = (wptr - rptr) & mask;
2341 int MoxaPortTxFree(int port)
2343 void __iomem *ofsAddr;
2344 ushort rptr, wptr, mask;
2347 ofsAddr = moxa_ports[port].tableAddr;
2348 rptr = readw(ofsAddr + TXrptr);
2349 wptr = readw(ofsAddr + TXwptr);
2350 mask = readw(ofsAddr + TX_mask);
2351 len = mask - ((wptr - rptr) & mask);
2355 int MoxaPortRxQueue(int port)
2357 void __iomem *ofsAddr;
2358 ushort rptr, wptr, mask;
2361 ofsAddr = moxa_ports[port].tableAddr;
2362 rptr = readw(ofsAddr + RXrptr);
2363 wptr = readw(ofsAddr + RXwptr);
2364 mask = readw(ofsAddr + RX_mask);
2365 len = (wptr - rptr) & mask;
2370 void MoxaPortTxDisable(int port)
2372 void __iomem *ofsAddr;
2374 ofsAddr = moxa_ports[port].tableAddr;
2375 moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
2378 void MoxaPortTxEnable(int port)
2380 void __iomem *ofsAddr;
2382 ofsAddr = moxa_ports[port].tableAddr;
2383 moxafunc(ofsAddr, FC_SetXonState, Magic_code);
2387 int MoxaPortResetBrkCnt(int port)
2390 cnt = moxa_ports[port].breakCnt;
2391 moxa_ports[port].breakCnt = 0;
2396 void MoxaPortSendBreak(int port, int ms100)
2398 void __iomem *ofsAddr;
2400 ofsAddr = moxa_ports[port].tableAddr;
2402 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2405 moxafunc(ofsAddr, FC_SendBreak, Magic_code);
2408 moxafunc(ofsAddr, FC_StopBreak, Magic_code);
2411 static int moxa_get_serial_info(struct moxa_port *info,
2412 struct serial_struct __user *retinfo)
2414 struct serial_struct tmp;
2416 memset(&tmp, 0, sizeof(tmp));
2417 tmp.type = info->type;
2418 tmp.line = info->port;
2421 tmp.flags = info->asyncflags;
2422 tmp.baud_base = 921600;
2423 tmp.close_delay = info->close_delay;
2424 tmp.closing_wait = info->closing_wait;
2425 tmp.custom_divisor = 0;
2427 if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2433 static int moxa_set_serial_info(struct moxa_port *info,
2434 struct serial_struct __user *new_info)
2436 struct serial_struct new_serial;
2438 if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2441 if ((new_serial.irq != 0) ||
2442 (new_serial.port != 0) ||
2443 // (new_serial.type != info->type) ||
2444 (new_serial.custom_divisor != 0) ||
2445 (new_serial.baud_base != 921600))
2448 if (!capable(CAP_SYS_ADMIN)) {
2449 if (((new_serial.flags & ~ASYNC_USR_MASK) !=
2450 (info->asyncflags & ~ASYNC_USR_MASK)))
2453 info->close_delay = new_serial.close_delay * HZ / 100;
2454 info->closing_wait = new_serial.closing_wait * HZ / 100;
2457 new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
2458 new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
2460 if (new_serial.type == PORT_16550A) {
2461 MoxaSetFifo(info->port, 1);
2463 MoxaSetFifo(info->port, 0);
2466 info->type = new_serial.type;
2472 /*****************************************************************************
2473 * Static local functions: *
2474 *****************************************************************************/
2475 static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
2478 writew(arg, ofsAddr + FuncArg);
2479 writew(cmd, ofsAddr + FuncCode);
2480 moxa_wait_finish(ofsAddr);
2483 static void moxa_wait_finish(void __iomem *ofsAddr)
2488 while (readw(ofsAddr + FuncCode) != 0) {
2490 if ((j - i) > moxaFuncTout) {
2496 static void moxa_low_water_check(void __iomem *ofsAddr)
2499 ushort rptr, wptr, mask;
2501 if (readb(ofsAddr + FlagStat) & Xoff_state) {
2502 rptr = readw(ofsAddr + RXrptr);
2503 wptr = readw(ofsAddr + RXwptr);
2504 mask = readw(ofsAddr + RX_mask);
2505 len = (wptr - rptr) & mask;
2506 if (len <= Low_water)
2507 moxafunc(ofsAddr, FC_SendXon, 0);
2511 static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
2513 void __iomem *baseAddr;
2516 if(len < 0 || len > sizeof(moxaBuff))
2518 if(copy_from_user(moxaBuff, tmp, len))
2520 baseAddr = moxa_boards[cardno].basemem;
2521 writeb(HW_reset, baseAddr + Control_reg); /* reset */
2523 for (i = 0; i < 4096; i++)
2524 writeb(0, baseAddr + i); /* clear fix page */
2525 for (i = 0; i < len; i++)
2526 writeb(moxaBuff[i], baseAddr + i); /* download BIOS */
2527 writeb(0, baseAddr + Control_reg); /* restart */
2531 static int moxafindcard(int cardno)
2533 void __iomem *baseAddr;
2536 baseAddr = moxa_boards[cardno].basemem;
2537 switch (moxa_boards[cardno].boardType) {
2538 case MOXA_BOARD_C218_ISA:
2539 case MOXA_BOARD_C218_PCI:
2540 if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
2544 case MOXA_BOARD_CP204J:
2545 if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
2550 if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
2553 if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
2560 static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
2562 void __iomem *baseAddr;
2565 if(len < 0 || len > sizeof(moxaBuff))
2567 if(copy_from_user(moxaBuff, tmp, len))
2569 baseAddr = moxa_boards[cardno].basemem;
2570 writew(len - 7168 - 2, baseAddr + C320bapi_len);
2571 writeb(1, baseAddr + Control_reg); /* Select Page 1 */
2572 for (i = 0; i < 7168; i++)
2573 writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
2574 writeb(2, baseAddr + Control_reg); /* Select Page 2 */
2575 for (i = 0; i < (len - 7168); i++)
2576 writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
2580 static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
2582 void __iomem *baseAddr, *ofsAddr;
2583 int retval, port, i;
2585 if(len < 0 || len > sizeof(moxaBuff))
2587 if(copy_from_user(moxaBuff, tmp, len))
2589 baseAddr = moxa_boards[cardno].basemem;
2590 switch (moxa_boards[cardno].boardType) {
2591 case MOXA_BOARD_C218_ISA:
2592 case MOXA_BOARD_C218_PCI:
2593 case MOXA_BOARD_CP204J:
2594 retval = moxaloadc218(cardno, baseAddr, len);
2597 port = cardno * MAX_PORTS_PER_BOARD;
2598 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2599 struct moxa_port *p = &moxa_ports[port];
2604 p->tableAddr = baseAddr + Extern_table + Extern_size * i;
2605 ofsAddr = p->tableAddr;
2606 writew(C218rx_mask, ofsAddr + RX_mask);
2607 writew(C218tx_mask, ofsAddr + TX_mask);
2608 writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
2609 writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);
2611 writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
2612 writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);
2617 retval = moxaloadc320(cardno, baseAddr, len,
2618 &moxa_boards[cardno].numPorts);
2621 port = cardno * MAX_PORTS_PER_BOARD;
2622 for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
2623 struct moxa_port *p = &moxa_ports[port];
2628 p->tableAddr = baseAddr + Extern_table + Extern_size * i;
2629 ofsAddr = p->tableAddr;
2630 if (moxa_boards[cardno].numPorts == 8) {
2631 writew(C320p8rx_mask, ofsAddr + RX_mask);
2632 writew(C320p8tx_mask, ofsAddr + TX_mask);
2633 writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
2634 writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
2635 writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
2636 writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);
2638 } else if (moxa_boards[cardno].numPorts == 16) {
2639 writew(C320p16rx_mask, ofsAddr + RX_mask);
2640 writew(C320p16tx_mask, ofsAddr + TX_mask);
2641 writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
2642 writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
2643 writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
2644 writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);
2646 } else if (moxa_boards[cardno].numPorts == 24) {
2647 writew(C320p24rx_mask, ofsAddr + RX_mask);
2648 writew(C320p24tx_mask, ofsAddr + TX_mask);
2649 writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
2650 writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
2651 writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
2652 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2653 } else if (moxa_boards[cardno].numPorts == 32) {
2654 writew(C320p32rx_mask, ofsAddr + RX_mask);
2655 writew(C320p32tx_mask, ofsAddr + TX_mask);
2656 writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
2657 writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
2658 writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
2659 writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
2660 writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
2665 moxa_boards[cardno].loadstat = 1;
2669 static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
2672 int i, j, len1, len2;
2673 ushort usum, *ptr, keycode;
2675 if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
2676 keycode = CP204J_KeyCode;
2678 keycode = C218_KeyCode;
2681 ptr = (ushort *) moxaBuff;
2682 for (i = 0; i < len1; i++)
2683 usum += le16_to_cpu(*(ptr + i));
2689 len2 = (len1 > 2048) ? 2048 : len1;
2691 for (i = 0; i < len2 << 1; i++)
2692 writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
2695 writew(len2, baseAddr + C218DLoad_len);
2696 writew(0, baseAddr + C218_key);
2697 for (i = 0; i < 100; i++) {
2698 if (readw(baseAddr + C218_key) == keycode)
2702 if (readw(baseAddr + C218_key) != keycode) {
2706 writew(0, baseAddr + C218DLoad_len);
2707 writew(usum, baseAddr + C218check_sum);
2708 writew(0, baseAddr + C218_key);
2709 for (i = 0; i < 100; i++) {
2710 if (readw(baseAddr + C218_key) == keycode)
2715 } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
2716 if (readb(baseAddr + C218chksum_ok) != 1) {
2719 writew(0, baseAddr + C218_key);
2720 for (i = 0; i < 100; i++) {
2721 if (readw(baseAddr + Magic_no) == Magic_code)
2725 if (readw(baseAddr + Magic_no) != Magic_code) {
2728 writew(1, baseAddr + Disable_IRQ);
2729 writew(0, baseAddr + Magic_no);
2730 for (i = 0; i < 100; i++) {
2731 if (readw(baseAddr + Magic_no) == Magic_code)
2735 if (readw(baseAddr + Magic_no) != Magic_code) {
2739 moxa_boards[cardno].intNdx = baseAddr + IRQindex;
2740 moxa_boards[cardno].intPend = baseAddr + IRQpending;
2741 moxa_boards[cardno].intTable = baseAddr + IRQtable;
2745 static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
2748 int i, j, wlen, len2, retry;
2753 uptr = (ushort *) moxaBuff;
2754 for (i = 0; i < wlen; i++)
2755 usum += le16_to_cpu(uptr[i]);
2766 for (i = 0; i < len2; i++)
2767 writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
2770 writew(len2, baseAddr + C320DLoad_len);
2771 writew(0, baseAddr + C320_key);
2772 for (i = 0; i < 10; i++) {
2773 if (readw(baseAddr + C320_key) == C320_KeyCode)
2777 if (readw(baseAddr + C320_key) != C320_KeyCode)
2780 writew(0, baseAddr + C320DLoad_len);
2781 writew(usum, baseAddr + C320check_sum);
2782 writew(0, baseAddr + C320_key);
2783 for (i = 0; i < 10; i++) {
2784 if (readw(baseAddr + C320_key) == C320_KeyCode)
2789 } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
2790 if (readb(baseAddr + C320chksum_ok) != 1)
2792 writew(0, baseAddr + C320_key);
2793 for (i = 0; i < 600; i++) {
2794 if (readw(baseAddr + Magic_no) == Magic_code)
2798 if (readw(baseAddr + Magic_no) != Magic_code)
2801 if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */
2802 writew(0x3800, baseAddr + TMS320_PORT1);
2803 writew(0x3900, baseAddr + TMS320_PORT2);
2804 writew(28499, baseAddr + TMS320_CLOCK);
2806 writew(0x3200, baseAddr + TMS320_PORT1);
2807 writew(0x3400, baseAddr + TMS320_PORT2);
2808 writew(19999, baseAddr + TMS320_CLOCK);
2810 writew(1, baseAddr + Disable_IRQ);
2811 writew(0, baseAddr + Magic_no);
2812 for (i = 0; i < 500; i++) {
2813 if (readw(baseAddr + Magic_no) == Magic_code)
2817 if (readw(baseAddr + Magic_no) != Magic_code)
2820 j = readw(baseAddr + Module_cnt);
2824 writew(j, baseAddr + Module_no);
2825 writew(0, baseAddr + Magic_no);
2826 for (i = 0; i < 600; i++) {
2827 if (readw(baseAddr + Magic_no) == Magic_code)
2831 if (readw(baseAddr + Magic_no) != Magic_code)
2834 moxa_boards[cardno].intNdx = baseAddr + IRQindex;
2835 moxa_boards[cardno].intPend = baseAddr + IRQpending;
2836 moxa_boards[cardno].intTable = baseAddr + IRQtable;
2840 static void MoxaSetFifo(int port, int enable)
2842 void __iomem *ofsAddr = moxa_ports[port].tableAddr;
2845 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
2846 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
2848 moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
2849 moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);